1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 #ident "%Z%%M% %I% %E% SMI" 27 28 #ifndef DIAL 29 static char SCCSID[] = "@(#)dkminor.c 2.3+BNU DKHOST 86/12/02"; 30 #endif 31 /* 32 * COMMKIT(TM) Software - Datakit(R) VCS Interface Release 2.0 V1 33 */ 34 /* 35 Return minor device number for a given Datakit device. 36 The channel number is used since using the minor device returned 37 by fstat gives wrong results for duplex systems. 38 */ 39 40 #include "dk.h" 41 GLOBAL 42 dkminor(fd) 43 { 44 struct diocreq iocb; 45 46 47 if (ioctl(fd, DIOCINFO, &iocb) < 0) 48 return(-1); 49 return(iocb.req_chmin); /* req_chmin contains channel number */ 50 } 51